Gizmo Motion Graphs

Prior Knowledge Question (Do BEFORE using the Gizmo.)

Max ran 50 meters in 10 seconds. Molly ran 30 meters in 5 seconds.

 

Who ran farther, Max or Molly?

• Max

• Molly

Prior Knowledge Question (Do BEFORE using the Gizmo.)

Max ran 50 meters in 10 seconds. Molly ran 30 meters in 5 seconds.

 

Who ran faster?

• Max

• Molly

Prior Knowledge Question (Do BEFORE using the Gizmo.)

Max ran 50 meters in 10 seconds. Molly ran 30 meters in 5 seconds.

 

Max ran​ ​ (a)   and Molly ran ​ (b)  

• 5 m/s
• 6 m/s
• 35 m/s
• 55 m/s

The Distance-Time Graphs Gizmo shows a graph and a runner on a track. You can control the motion of the runner by manipulating the graph (drag the red dots).

• I can move the dots.

• I have no idea what to do. I will read again.

Check that Number of points is 2, and that under Runner 1 both Show graph and Show animation are turned on.

Do not do anything with Runner 2.

 

The graph should look like the one shown – one point at (0, 0) and the other point at (4, 40).

• My screen looks exactly as directed.

• My screen gizmo needs some adjusting.

Click the green Start button on the stopwatch.

 

            What happens?

• The runner runs 40 meters in 4 seconds.

• The runner moves away from the staring line.

• Both of these occur.

Click the red Reset button on the stopwatch.

The vertical green probe on the graph allows you to see a snapshot of the runner at any point in time.

Drag it back and forth.

As you do, watch the runner and the stopwatch.

QUESTION: What was the position of the runner at 1 second? ____ meters

What are the coordinates of the runner at 1 second into his run?

• (10,1)

• (1,10)

When was the runner on the 30-meter line? _____ seconds

What are the coordinates of the runner at the 30-meter mark?

• (3,30)

• (30,3)